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pro-word
pro-word n.
Brit. 
/ˈprəʊwəːd/
, /ˈprəʊwəːd/U.S. /ˈproʊˌwərd/
/ˈproʊˌwərd/ΚΠ
1965 Language 41 393 We can define a set of proword substitutions which are similar to various types of zeroing.
1994 Internat. Jrnl. Lexicogr. 7 169 The syntagm as a whole is not proportional to a set of pro-words.
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